聚丙烯热收缩带补口施工方法及工艺研究  

Method Statement and Process Research for Field Joint Coating of Polypropylene Shrink Sleeves

作　　者：李佳铮 吴阳 胡南 金良 彭爱民 LI Jia-zheng;WU Yang;HU Nan;JIN Liang;PENG Ai-min(China Petroleum Pipeline Coating Engineering Company Co.,Ltd.Langfang 065001,China)

机构地区：[1]中油管道防腐工程有限责任公司,河北廊坊065001

出　　处：《全面腐蚀控制》2021年第10期20-24,共5页Total Corrosion Control

摘　　要：为了更好的掌握聚丙烯热收缩带的补口施工技术,提高施工质量,从管口喷砂、搭接区处理、管口预热、底漆涂装、收缩及回火等方面进行了工艺对比,从而找到最佳的施工方法。结果表明:管口预热采用中频加热的速度最高,可有效降低施工时间,提高施工效率;底漆喷涂可实现底漆均匀涂装,且涂装劳动强度低;使用红外加热对聚丙烯热收缩带进行收缩的过程中,不仅实现周向同步收缩,并且收缩的表面平整,无气泡夹带,有效的控制了施工质量。In order to obtain the method statement for field joint coating of polypropylene shrink sleeves,and enhance the quality of construction,we contrast the process of sand blasting,preparation of lap area,pre-heating,spraying of primer coat,installation and tempering,to find the best method.The result show that using medium-frequency heating can get the highest speed of pre-heating,which can reduce the construction cycle and increase efficiency.Using spraying method can achieve uniform primer coat,and reduce the labour intensity.Using infrared heating to heat the shrink sleeves can actualize circumference shrink synchronization,and make the surface smoothly and no air bubble contained,which control the construction quality efficiently.

关 键 词：聚丙烯 热收缩带 红外加热 

分 类 号：TE866[石油与天然气工程—油气储运工程]